Door hanger and fuel charging means for rotary furnaces



' April 16, 1949- M. KAUFMANN .1 6

DOOR HANGER AND FUEL CHARGING MEANS FOR ROTARY FURNACES Original Filed Sept. 3, 1957 2 Sheets-Sheet 1 L -E O Q I, E I 15 5 i414 "fi Z. I J c .6" o a I fizz'eriiazy 77227265569. J [ar 2/222 L. JZ aufrrza rzrz F m 5: W

April 16, 1940. KAUFMANN 2,197,216

DOOR HANGER AND FUEL CHARGING MEANS FOR ROTARY FURNACES I Original Filed Sept. 3. 1937 2 Sheets-Sheet 2 71 I III I II a I I 10 21: 1:1

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Patente'd 'Ap r. 16, 1940 noon HANGER AND FUEL CHARGING MEANS FORFROTARY FURNACES Marvin L. Kaufnianmflhicago, 111.,

Henry assignor" to Lindenberger, Chicago, 11].

Application September 3, 1937, Serial No. 162,390

7 Renewed'FebruarylG, .1940 a 14 Claims; (o1. 158- 2) This invention relates to door hangers for rotary furnaces. "The object of theinvention is to provide a simpla-practical and .for the doorsof rotary furnaces.

More specifically, the object of the invention has been to provide means for opening and closing the door of a rotary furnace without it being necessary to engage or disengage the burner and the air supply and fuel supply connections of a rotary furnace. Heretofore it has been necessary to disengage the air supply and fuel supply, before opening the door of the furnace, and it'has also been necessary to engage the same after closing the door of the furnace. As a result of my invention, means have been provided whereby, when the door is closed, theburner and air supply and fuel supply are moved automatically into position with the door in one operation, by the mere closing of the door, and, on the other hand, when the dooris opened, it is not necessary to disengage the features mentioned, it being necessary only to open the door, the hanger serving not only to support the door, but also the burner and the air and fuel supply means.

As a result, it will be manifest to those skilled in the art, that a great saving in the time and labor, which was necessarily consumed in making the engagements and disengagements for the features mentioned with the furnaces heretofore used, is effected as a result of my invention, especially when it is realized that as many as eight men were required in such operations with types heretofore used.

Another object is to provide a door hanger con struction that is adjustable and retractable so'as to permit speedy unobstructed access 'to the charging aperture of the furnace.

Other objects and advantagesv will appear and be brought out more fully in the following specification and drawings, wherein:

door hanger structure embodying my invention;

Fig; 2 is aplanview of the same; j Fig. 3 is a view similar to Fig. 1 illustrating a modified form of my invention; and- Fig. 4 is a top view of the same.

Referring more particularly to the drawings, I show a rotary furnace I0 having a circular supporting trackway I I mounted on flanged roll? ers I2 in brackets 13 carried by a base plate M on a floor IS. The furnace hasa circular hatch. or charging aperture I6 "and a circular'door I'I which consists of a circular plate I8 ofisteel or.

eflic'ient hanger burner assembly, including the porting plate 38 carried bearing 37.

- as well as the fuel inlet Fig. 1 is a front view of a rotary furnace and.

equivalentmaterial having a flange. I9, the plate and flange being linedwith fire brick 20, there being a tapered fuel and air charging aperture or. opening Zia A fuel burner 22 is suitably'mounted 'onthe exterior of door I! and is provided with a fuel valve 23 in communication with a fuel pipe 24. The door I? is mounted on a hanger frame 25 which consists of an upper angle member 26, lower angle member 2'! and brace members '28 and 29 respectively, and pipev 24 is suitably secured to angle member 26. Frame'25 is suitably secured as by welding to a tubular stanchion 30 to the lower end of which is'secured-a bearing co'ne 3l mounted on a roller bearingtZ. A suitable -bearing shield 33 may be secured to stanchion 3G for the protection of bearing 32-. A union, or similar coupling, 34 secured the hollow stanchion to tea tubular extensiontli which in turn is provided with a bearing cone36 mounted in a roller bearing}? which is supported by sup-T by postsf39' anchored to the floor I5, or inv any other equivalent manner. A sleeve 40 extends downwardly into the top extension 35 and is connected by an-elbow' ll to an air supply pipe 42. A suitable bearingshield 43 may be secured to elbow 4| for the protection'of An air supply pipe. 44 provided with an air control valve 440,13 secured toframe25 and connects fuel burner 22 with stanchion by means of a T 45. A flexible hose 46 provides, suitable connection between pipe and afuel supply pipe [47 and The operation of'my invention as described 30 is seen to provide a door hanger frame 25 which carries the door IT;

pipe'24 and air inlet pipe 44. The door I! andinlet pipe 24 and. air. inlet pipe 44 may thus be 'easily and readily swung clear of the furnace I0 du'ringthe charging and discharging operations. While. I have shown the door hanger pivoted at one side of thefurnace, it will'be apparent that the pivot axis couldbe horizontal either above or below the furnace .or at any other convenient angle,'as'desired. I

In .Figs. 3 and 4, I show a modified form of door hanger which is adaptedto be slidable vertically on a stanchion member, the furnace being indicated at Illa having trackway Hm'fianged rollers Mo on brackets, Isa on base member .9

burner 22 as well as fuel a a handle bar 48 is" secured I to frame 25adjacent the door l1. l

on floor. 50. The furnace is provided with the "hatch 16a and a circular door I Ic'which consists of a circular plate 3a of steel or equivalent material having a flange l9a, the plate and flange being lined with fire brick a, there being a tapered changing aperture 2|a for fuel. A fuel burner 22a is suitably mounted on the exterior of door [la and is provided with a fuel valve 23a in communication with a fuel pipe Ma. The door Ila is mounted on a hanger frame 2511 which consists of an upper angle member 26a, lower angle member 21a and brace members 28a and 29a. respectively, and pipe E la is suitably secured to angle member 26a. Frame a is welded or otherwise secured to a sleeve 5! slidably mounted on a hallow stanchion 52 which rests on a flanged base plate 53. The upper end of stanchion 52 is connected by elbow 54 to an air supply 55 and has an aperture 56 aligned with the end of a pipe 51 which is equipped with a suitable control valve 510. secured on frame 25a. when the door Ila is in proper position aligned with hatch ltd. A T 58 connects pipe 51 to sleeve 55' and suitable packing glands 59 are provided for the ends of sleeve 51 and stanchion 52. A hydraulic jack 60 is mounted on a base plate 6! on floor 53 and has a cylinder 62 which is supplied with water or other liquid under pressure which is supplied from a supply pipe 63 having a two-way control valve 6 2- and a drain pipe 65. Piston 8G is contained in cylinder 62 and hasa flanged head, Ell which carries a bearing plate 68 on which frame 25a may rest. Plate 68 has guide extensions 69 having apertures 10 therein to receive guide rods 1 l the latter being secured in apertured ears or lugs, or a hub 12 on the top of jack fill and seemed adjacent their upper ends to a brace block l3 anchored to stanchion 52. An angle plate 14 is attached to the rear of angle El'a and angle 25a and angle plate M are each provided with an arcuate slot 15 to receive stud bolts it by which arrangement a limited pivoting action may be provided on stanchion 52 for frame 25a sufficient for clearance of door Ila and hatch its. A flexible hose 46a connects fuel pipe 2 5a with fuel supply pipe 41a.

The operation of the invention, according to Figs. 3 and 4, should be obvious. The hydraulic jack 653 is adapted to raise and lower hanger frame 25a carrying the door Ila and burner assembly including air and fuel inlet pipes. It will be clear that by appropriate mounting of the jack 60 the door and hanger may be lowered from the closed position as readily as raising it with respect thereto.

It will thus be seen that by the means that I have provided, it is not necessary to disengage the burner or air conduit or fuel conduit from the door in order to open the same, nor is it necessary to engage the same 'or connect it to the door after the door has been closed. Instead, by means of my invention, by one operation, the door is closed and, at the same time, the burner and the air and fuel conduits are automatically in place for operation. Only one skilled in the art can fully appreciate the saving that will be effected in timeand labor by the elimination of the engaging and disengaging operations in respect to the burner assembly heretofore required.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, these are capable of variation and modification without departing from the spirit of the invention. Ltherefore, do notwish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. An adjustable closure for rotary furnaces having a charging aperture comprising a door, a structural support for said door, and adjustable mounting means for said support for moving said door laterally in and out to engage the furnace over the aperture or to clear the furnace, and edgewise vertically to open and close the aperture.

2. An adjustable closure for rotary furnaces comprising a door'having a fuel charging aperture, a structural support for said door extending at one side only opposite the edge of the door, a fuel conduit for said door secured to said door and said. support to move with the latter, and adjustable mounting means for said support and conduit, adapted to permit the door to be opened and closed without disengaging-the conduit.

3, An adjustable closure for rotary furnaces comprising the combination with a rotary furn ace having a hatch, a door having a fuel charging aperture, a fuel conduit secured to said door and adapted to discharge into said aperture, a structural support for said door and conduit rigidly secured thereto to move together as one unit, said parts extending at one side of the furnace and offset rearwardly, and adjustable mounting means for said support, said means including a stanchion, adapted to permit t, e door to be opened and closed without'disengaging the conduit, said stanchion constituting an air supply and having a pipe leading therefrom at the support and communicating with the aperture.

4. An adjustable closure for rotary furnaces comprising the combination with a rotary furnace having a hatch, a door having a charging aperture, fuel conduits secured to said door and adapted to discharge into said aperture, an elongated horizontal structural support'for said door and conduits, said door being mounted at one end of said support, and adjustable mounting means for said'support at the opposite end thereof, said means including a pivoted stanchion on which the support is mounted to move, said stanchion being disposed laterally at one side of the furnace and offset rearwardly of the support, adapted to permit the opening and closing of said door without disengaging the conduits.

5. An adjustable closure for rotary furnaces comprising the combination with a rotary furnace having a hatch, a door having a charging aperture, fuel and air conduits secured to said door and adapted to discharge into said aperture, said conduits extending laterally beyond the side of the furnace, an elongated structural support for said door and conduits,

said door being 'mounted at the inside'of the support and one end of said support, and adjustable mounting means for said support at the opposite end thereof, said means including a vertically pivoted stanchion, adapted to permit the opening and closing of said door without-disengaging the conduits.

6. An adjustable closure for rotary furnaces comprising a door having an aperture. a fuel conduit secured to said door and adapted to discharge into said aperture, an elongated structural support for said door and conduit, said door being mounted at one end of said support, and adjustable mounting means for said support at the opposite end thereof, said means including said furnace laterally and rearwardly, said stanchion having an air passage therein. and

adapted to permit the opening and closing of said door Without disengaging the conduit.

'7. An adjustable closure for rotary furnaces comprising a door having an "aperture, a fuel conduit connected to said door and adapted to discharge into said aperture, an elongated structural support for said door and conduit, said door beingmounted at one end-of said support, and adjustable mounting means for said support at the opposite end thereof, said means including a stanchion and a sleeve slidable on said stanchion, adapted to permit the opening and closing of said door without disengaging the conduit.

8. An adjustable closurefor rotary. furnaces comprising a door having a fuel and air charging aperture, fuel and air conduits connected to said door and adapted to discharge into said aperture, an elongated horizontal structural support for said door and conduits'disposed edge wise vertically and adapted for slight lateral movement, said door being mounted at one end of said support, and adjustable mountingmeans for said support at the. oppositeend'thereof, said means including a stanchion and a sleeve slidable on said stanchion, said stanchion having an air passage therein, and adapted to permit the opening and closing of said door without disengaging the conduits. n

9. An. adjustable closure for rotary furnaces comprising a door having-an aperture, a fuel conduit connected to said door and adapted to discharge into said aperture, an elongated structural support for said door and conduit,

said door being mounted at one end of said sup-- port, auxiliary supporting means for said sup-- port comprising an hydraulic jack operatively connected to the support, and adjustable mounting means for said support at the opposite end thereof, said means including a stanchion and a sleeve slidable on saidstanchion, adapted to out disengaging the conduit.

, 10. In combination a furnace having a charging aperture, a door adapted'to close the charging aperture of the furnace, a structural support permitthe opening and closing-of said door'withfor the door and rigidly connected thereto, said support extending laterally a considerable distance beyond the side of the furnace, a burner carried by the support, a fuel pipe leading thereto from near the outer end of the support, a hollow vertical stanchion on which the outer endof thesupport is mounted and constituting air supply means, an air pipe leading fromsa'id stanchion to the burner along the support and.

movable therewith to cause the door to cover and uncover the aperture, and posts'connected to the stanchion and relative to which the support is movable I 11. The combination with a rotary furnace having a charging aperture, of a door having a fuel charging aperture, a vertical tubular stanchion having a fixed connection with an air supplyand a rotatable part, a structural frame disposed on edge and anchored at its'outer end to said rotatable part and secured at its inner face, against the outer face ofv the door, a supporting frame for the stanchion, a fuel conduit mounted on the door, a burner on the leading from the stanchion and also connected to the burner, and afuel supply pipe carried by the'frame and having a flexible connection to the fuel conduit. v

12. In combination with a rotary furnace having a hatch, a door for said hatchhaving a charging aperture for fuel, a fuel burner, mounted on the door and provided with a fuel valve, a tubular stanchion having a movable portion, a hanger frame on which the door is rigidly mounted, a fuel pipe rigidly supported on the frame, a stationary air supply pipe leading to said stanchion and movablefportion, and an air supply pipe leading fromsaid stanchion and movable portion and connected to the fuel burner and provided with an air-control valve, the frame and door adapted to. be moved to open and closed positions while the parts are connected of the stanchion and connected to the fuel burner and provided with an air control valve, abearing rotatably supporting the lower end of the stanchion, an upright frame receiving the upper end of the stanchion, and a bearing supported thereby rotatably mounting the stanchion.

v 14. In combination with a rotary furnace having a hatch,-a door for said hatch having a charging aperture for fuel, a fuel burner mounted on the door and provided with a fuel, valve, a hanger frame to which the door is secured, a

tubular'stanchion, a sleeve slidable on the stanchion,a horizontal airpipe on theframe' connected to the burner and having a control valve,

said pipe being connected to the sleeve and communicating with the'interior of the stanchion when the door is closed, said frame being connected to the sleevefan upright frame supporting the stanchion, a hydraulic jack mounted be- .neath the hanger frame and provided with a cylinder connected to the upright frame and having a fluid supply and discharge, a pistonin the cylinder having a head, guidemeans for the piston on which the hanger frame rests and an adjustable connection between the hanger frame and the piston allowing angular adjustment of the hanger frame and door relatively to the furnace and the stanchion,

MARVIN L. KAUZEMANN; 

